"f" for fat and this mother says people talking about weight issues in her daughter's presence is damaging to their self-esteem. Abc's juju chang spoke to this mom on a mission. You gained nine pounds. Have you been cheating? Hmm. It's a figment of any parent's vivid imagination. Sending a kid off to camp and I'm getting a counselor like ben stiller. That's hollywood's version of a weight loss camp but when a regular counselor uses the "f" word, fat, she was unnerved by her daughter's reaction. I can't drink soda because drinking soda gives you a fat tummy and I was horrified. They are too young to be thinking about dieting or whether they're fat or thin. Reporter: Stephanie made a rule to not allow the "f" word to be used by anybody in the house and wrote a blog sounding the alarm children listen to parents very carefully. I have three young girls here and they're impressible. Reporter: Instead stephanie likes to boogie were her girls to show that women of all shapes and sizes should strut their stuff proudly. I do booty shakes in front of my kids' face and let them know my butt might be a little big but it's awesome. Reporter: It sparked some outrage but praise as well for moms trying to keep their daughters and sons free of the weight anxiety. Some teens agreed. I think like it makes -- it would make someone insecure. Reporter: And yet these girls' own moms felt differently. That every adult who influences kids has a duty to counteract all that pressure to be thin. We as a parent give responsibility to others to help them interpret messages. Reporter: But a lot of parents feel it's not so much what you say but how you say it. I think it makes you fat should be left off the table. Kind of offensive to the kid. Reporter: Why? They should tell them to lower on the soda but not like don't drink soda ever again. Reporter: For "good morning america," I'm juju chang in new york. Joined by parenting expert, dr. Karyn gordon. Thank you. And, doc, I am 100% lined up I think as we all behind this mother's mission. Let's not give them something to obsess over so young. So here's my whole take on it. I think -- I love -- I love the mother's heart. She has it in the right spot and how it's impacting her daughter. I don't know if it's realistic. I don't know if it's realistic in terms of expecting everybody -- anybody who comes into her home in terms of certain words -- I don't let people say that word in my house among stupid. Constructive conversation you can have gentleman. My whole take on it, I think it is absolutely important for parents to have certain words off limits but it's the most important, the number one source of importance in terms of their own body image is the parent. How the mother -- her own perception of her own body. What's the message she's sending. I have found that the most significant source of influence is actually the mother. The same gender parent, fathers to sons, mothers to daughters. Oh. It's not that I'm forbidding or say it's a bad idea but there's a bigger mission here. Beyond just saying the word. Absolutely. It's hearing it and we're the biggest educators as mothers. It's focus. Will we put our focus on people we can't control or around ourselves and our own method and make sure we are our own educators. A great substitute, amy and i agree, I always say the word healthy. Healthy and I talk about myself in that way in hopes she through osmosis will begin know that at that age.

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